M. H. van Kerkwijk

TL;DR: In this article, an optical spectroscopy of the companion to PSR J1816+4510 was presented, and it was confirmed that it is part of the binary system with a radial velocity amplitude of 343 ± 7 km s^(1), implying a high pulsar mass.

TL;DR: In this paper, the authors report on an approximately twelve hour long X-ray flare from the low-mass Xray binary KS 1731-260, which has all the characteristics of thermo-nuclear Xray bursts, except for its very long duration and therefore large energy release.

TL;DR: In this article, the authors present deep B, V, and R images of the field containing the eccentric binary pulsar system PSR B2303+46 and show that the observations are consistent with a hot white dwarf companion with cooling age equal the characteristic age of the pulsar and mass within the range set by timing observations and the Chandrasekhar mass.

TL;DR: In this article, a 2 σ upper bound was established for the frequency derivative of the X-ray spectrum of X J1856 with respect to the magnetic field strength of the source.

TL;DR: In this paper, spectroscopic and photometric observations of the optical counterpart to PSR J1911-5958A, a millisecond pulsar located towards the globular cluster NGC 6752, are presented.